Java 立即触发本地通知

我使用以下代码在android中触发本地通知

            AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
            Intent notificationIntent = new Intent("android.media.action.DISPLAY_NOTIFICATION");
            notificationIntent.addCategory("android.intent.category.DEFAULT");

            PendingIntent broadcast = PendingIntent.getBroadcast(NewPaymentReminder.this, 100, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

            Calendar cal = Calendar.getInstance();
            cal.set(Calendar.MONTH, Integer.parseInt(Month_only));
            cal.set(Calendar.YEAR, Integer.parseInt(Year_only));
            cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(Date_only));

            cal.set(Calendar.HOUR_OF_DAY, hour);
            cal.set(Calendar.MINUTE, min);
            //  cal.set(Calendar.SECOND, secs);
            cal.set(Calendar.AM_PM, Calendar.PM);

            System.out.println("Calender - Get time in Milliseconds" + cal.getTimeInMillis());

            alarmManager.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), broadcast);

接收器类别：

public class AlarmReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Intent notificationIntent = new Intent(context, MyPaymentReminder.class);

        TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
        stackBuilder.addParentStack(MyPaymentReminder.class);
        stackBuilder.addNextIntent(notificationIntent);

        PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);

        Notification notification = builder.setContentTitle("Payment Reminder")
                .setContentText("New Notification")
                .setTicker("New Message Alert!")
                .setSmallIcon(R.drawable.logo)
                .setContentIntent(pendingIntent).build();

        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(0, notification);
    }
}

我已经在清单中注册了我的接收者，也在receiver类中收到了数据。但我的问题是我想在特定的日期和时间触发通知，但它会立即触发！朋友们，任何帮助都将不胜感激

检查是否

System.out.println("Calender - Get time in Milliseconds" + cal.getTimeInMillis());

是印刷时代的未来

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此外，如果目标ApiLevel高于19，则应使用alarmManager.setExact：

我已经将时间触发时间设置为04:29，并且cal.getTimeInMillis（）返回一个值-61622604035261。它返回一个负值DrakCheck如果你设置的是正确的年份，据我所知你设置的是0017年而不是2017年我发现solution@Drake，而不是上面，我只是以秒为单位找到两个日期之间的差异，并将其发送到alarm manager！现在，它的工作很好！谢谢@Drake！